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20.21.8.120.4000 Finder Modular relay 1phase switch 1 NO AC 120V
Finder 20.21.8.120.4000 modular installation relay with 16 A switching capacity, 120 V AC/DC coil and one changeover contact designed for industrial automation and building control applications.
Why Choose the Finder 20.21.8.120.4000 Modular Relay?
The Finder 20.21.8.120.4000 is a compact and reliable modular installation relay designed for switching electrical loads in industrial, commercial and building automation applications. As part of the proven Finder 20 Series modular relay range, it provides dependable control for lighting systems, heating equipment, ventilation systems and general electrical loads requiring reliable switching.
This relay combines a space-saving DIN rail mounting design with proven electromechanical switching technology, making it suitable for electrical distribution boards and automation control panels. Its modular housing, screw terminals and reliable switching mechanism provide straightforward installation and dependable long-term operation.
With a 120 V AC/DC coil supply and a 16 A contact rating, the Finder 20.21.8.120.4000 is suitable for applications requiring compact load control and dependable switching performance. Its single changeover contact configuration provides flexible circuit control for automation and electrical installations.
Key Advantages
- Compact modular relay designed for DIN rail installation.
- 16 A switching capacity suitable for industrial and commercial control applications.
- 120 V AC/DC coil operation for flexible control system integration.
- Single changeover contact provides versatile circuit switching.
- Space-saving modular design for electrical distribution boards.
- Suitable for automation, lighting and building control systems.
Key Features
- Finder 20 Series modular installation relay.
- 16 A rated contact current.
- 120 V AC/DC coil voltage.
- 1 changeover contact (1CO / SPDT).
- 35 mm DIN rail mounting.
- Screw terminal connections for secure wiring.
- Compact modular housing for electrical panels.
- Reliable electromechanical switching technology.
Reliable Switching for Automation and Building Systems
Modular relays such as the Finder 20.21.8.120.4000 provide dependable electrical switching between control circuits and connected loads. Their compact DIN rail format makes them ideal for installations where space efficiency, reliability and straightforward maintenance are important.
The Finder 20 Series is designed for professional electrical applications, combining robust relay technology with compact dimensions and reliable switching performance for modern automation, building management and control systems.
Typical Applications
- Industrial automation control panels.
- Building management and electrical distribution systems.
- Lighting control applications.
- Heating and ventilation equipment.
- Electrical load switching systems.
- Machine control and automation installations.
Technical Specifications
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| Device Type | Latching / Impulse Relay | |
|---|---|---|
| Mounting Type | DIN rail | |
| Switching Current (A) | 16 A | |
| Load Voltage | 250 V AC | |
| Coil / Supply Voltage | 120 V AC, 120 V DC | |
| Contacts | 1 C/O | |
| IP Rating | IP20 | |
| Manufacturer | Finder | |
| Series | 20 Series Modular Relays | |
| Model | 20.21.8.120.4000 | |
| Product type | Modular installation relay | |
| Contact configuration | 1 changeover contact (1CO) | |
| Rated contact current | 16 A | |
| Coil voltage | 120 V AC/DC | |
| Rated switching voltage | 250 V AC | |
| Mounting type | 35 mm DIN rail mounting | |
| Termination type | Screw terminals | |
| Protection rating | IP20 | |
| Contact material | AgNi |
Frequently Asked Questions
What is the Finder 20.21.8.120.4000 used for?
The Finder 20.21.8.120.4000 is a modular relay used for switching electrical loads in industrial automation, building control and electrical distribution applications.
What coil voltage does this relay require?
The relay operates with a 120 V AC/DC coil supply.
What is the switching capacity of this Finder relay?
The Finder 20.21.8.120.4000 has a rated contact current of 16 A.
How many contacts does this relay have?
The relay features one changeover contact for flexible switching applications.
How is this relay installed?
The relay is designed for installation on a 35 mm DIN rail inside electrical control panels and distribution boards.
Trusted for Reliable Electrical Control
Finder modular relays are widely used by electrical engineers and automation professionals to provide dependable switching, compact installation and reliable control in modern electrical systems.
